Insert for concrete and the like, to receive nails and other fasteners, or building elements



v H. HUDSON. INSERT FOR CONCRETE AIND THE LIKE, T0 RECEIVE NAILS AND OTHER' FASTENERS, 0R

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UNITED STATES.

PATENT OFFICE.

HENRY IIUDsoN, or MALVERN, VICTORIA, AUSTRALIA.

INSERT FOR CONCRETE AND THE LIKE, T0 RECEIVE NAILS AND OTHER FASTENERS,

OR BUILDING' ELEMENTS. i

Application filed. .Tune 11, 1918.

T 0 all whom t may concern Be it known that I, HENRY HUDSON, a

subject of the King of Great Britain and Y Same.

My invention relates to inserts for setting in building material (which fixes the in` serts), such as mortar or concrete which is unsuitable for direct insertion thereinto of nails, staples, screws, and other building elements, which however can be firmly fixed by the aid of inserts of the kind indicated.

My insert contains improvements which are of considerable value in such articles. It has a metal shell with broad oppositely located fiat or curved cheeks and one object of the invention is to' r space these cheeks apart by a wood or other suitable core or plug, or by indentations or spacing members extending from one (or each) cheek to the he spacing members within the insert prevent the cheeks being forced too close together. If they were closer than a f suitable minimum and were set in hard concrete-it would be impossible to drive common nails between the cheeks. The insert interior is protected from free access of moist matter as mortar or concrete, and it will receive and hold firmly a common nail, screw or various other building elements.

The shells are preferably of galvanized iron, and the suitable minimum internal space is a little narrower than the thickness of the nails or building elements to be inserted; the said elements will when being in serted bulge the cheeks outward somewhat, or will groove or aperture them (with or without bulging) according to the resistance by concrete or other external material, and other local conditions.

Another object of the invention is to provide for holding inserts so that they can be embedded by flowing concrete and be anchored when the concrete sets. I first tack or nail the insert to a concrete form, and

Specification of Letters Patent.

Patented Aug. s, 1920.

Serial No. 239,472.

in some cases also support it otherwise as by a tie wire. Then the concrete is poured, and allowed to set, the form being then removed,

any projecting parts of tacks or nails being removed, as by cutting them off. To allow of the said tacking or nailing the inserts have perforated outer lips or flanges.

Another object of this invention is to enable an insert to receive nails or other insertions from a plurality of sides; a plurality of broad receiving mouths or open edges are therefore provided; and an insert with two opposite mouths may for brevity ybe called a duplex insert. A further object of the invention is to enable concrete when poured to fill a broad space under an insert more satisfactorily than if a broad insert is used in a horizontal position.

Some forms of my construction are shown by drawings herewith but the invention is not limited to these forms nor to any particular designs or minor details of parts.

Figure l shows in section a very simple insert in a mortar joint.

Fig. 2 shows in section a duplex insert in a mortar joint.

Fig. 3 shows a cross section of Fig. 2.

, Fig. i is a perspective view of part of an insert, illustrating its mouth and the closed ends of its cheeks. l

Fig. 5 shows in section part of a modified insert.

Fig. 6 shows in section a wall having two oppositely set skirting boards fixed to one insert. A

Fig. 7 shows in section a wall having two oppositely set architraves and intermediate door framing all fixed to one insert.

Fig. 8 shows in section a curved insert. The scales in these figures differ. The insert in Fig. 2 has (to receive nails or other insertions to be fixed) a mouth at each end, and in Fig. 7 it has three mouths, namely two opposite one another and one connecting the said two.

In these drawings l indicates bricks or the like, 2 insert embedding material as mortor orconcrete, 3 a concrete form, i and 5 skirting boards, 6, 6il architraves, 7 a door framing, 8 plaster, and 9 nails to attach inserts to concrete forms.

A are Hat (and N are curved) insert cheeks having lips C, D, spread apart to form insert mouths and having edges or flanges C1, D1, to bear ordinarily on the The'inserts have keying means comprised by oneV or more outwardly extending rear enlargements or projections J. Part of the insert to the rear of its mouth has means 'to receive a support as a wire. Thus L is a hole engaged by a wire M, the upper end Y(not shown) of the wire being lixed'to any convenient support prior to pouring concrete to anchor the insert.

The cheek sides are closed together suliiciently to prevent 'concrete or mortar freely entering and obstructing the full use of the inserts. Thus the sides are curved together `at S, and as a variation one side overlaps the other at Q.l y In Fig. 7, Yare iixing nails or the like.

. I do not show any nail which lines archi- .zontal cheeks were used they would cause voids to occur in the concrete flowing under them.

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-Having described this invention, what is claimed by Letters Patent is -V '1. An insertotl the kind described including a piece of sheet metal bent upon itself to provide a pair of parallel and spaced apart cheeks leaving a substantially continuous space there between of the length and breadth of the cheeks and of narrower width than the thickness of articles to be inserted therein, the metal of one cheek being at a 'and tightly closed to prevent the entrance of concrete or the like, substantially as described.

2. An insert of the character described ,composed of sheet metal shell bent upon itself to provide a pair of curved cheeks lying close together but substantially parallel throughout and separated by a space slightly smaller than articles'to be inserted therein, said cheeks having a ilaring mouth along one edge thereof, said inout-h being formed to receive fastenings which are 'adapted to enter a concreteform, whereby my hand'.

HENRY HUDSON. 

